PHILADELPHIA—March was an active month for Comcast as it launched its new home automation/home security service in a number of additional major markets across the country. Xfinity Home is now being offered in Atlanta, the San Francisco Bay area and parts of Connecticut and Vermont—and Utah.

PHILADELPHIA—Many telecoms decided that 2011 was the year to launch a home security/home automation offering—Verizon, Time Warner Cable, Frontier Communications, AT&T and Cox Communications among them.
But Comcast, based here, was ahead of the curve, launching Xfinity Home Security in Houston in June 2010. The company, with millions of customers nationwide, has so far made the product available in other major markets around the country, and plans to launch it in Tucson, Ariz. sometime this year.